Heating and hot water boiler



Sept. 15,1959 R. MEYERS 2,904,014-

HEATING AND HOT WATER BOILER Filed March 21, 1957 tvv 7 IN VEN TOR.

I ATTU R N EYE United States Patent HEATING AND HOT WATER BOILER Robert L. Meyers, Cumberland, Md.

Application March 21, 1957, Serial No. 647,516

1 Claim. (Cl. 122-33) The invention relates to heating and hot water boilers designed for domestic and commercial use, and in particular a boiler having a vertically disposed center tube with a pilot and burner below the lower end, with a heating coil around the center tube and with a hot water coil in an outer water jacket or boiler housing positioned over the heating coil and tube wherein hot water from the center tube passes upwardly through a supply pipe to radiators and the like and returns from the radiators and the like through a return pipe to the heating coil around the center tube, passing from the coil to the lower end of the outer portion of the boiler and wherein hot water for domestic use is supplied from the hot water coil positioned in the boiler.

The purpose of this invention is to provide a heating boiler wherein all water supplied by the boiler is subjected to a relatively small burner with the water confined to a pocket in a center tube whereby the hot water from the confined pocket or tube is circulated through a heating system with the return water passing first into the boiler and from the boiler into the center tube or confined pocket.

Various types of boilers have been provided for heating systems, however, in substantially all boilers of this type burners apply heat to relatively large bodies of water and it is necessary to raise the temperature of all water in the boiler in order to supply hot water to radiators or other heating units and also to taps for domestic use. With this thought in mind, this invention contemplates a boiler in which the heat is directly applied to water in a relatively small container or tube positioned in a cavity in a larger boiler wherein water directly heated is carried through supply pipes to radiators or other heat exchanging elements so that only water of the boiler, at the highest temperature thereof, is delivered to the heating elements.

The object of this invention is, therefore, to provide a boiler having a cavityin the center in which a center tube is positioned wherein heat of a burner applied directly to the center tube also heats water in the surrounding boiler and wherein hot water for use is taken from the center of the center tube.

Another object of the invention is to provide a heating boiler in which heat from a burner, such as a gas, oil, coal or electric burner, is applied directly to a relatively small body of water wherein rapid circulation of the hot water is obtained and wherein water of the highest temperature of the boiler is circulated directly to heat exchanging elements.

Another important object of the invention is to provide a combination heating and hot water boiler wherein the return water passes through a coil around a center heating tube and wherein hot water for domestic use is supplied by an independent coil positioned in the boiler.

A further object of the invention is to provide an improved heating boiler wherein only a small body of water is subjected to a heat producing element and wherein the capacity of the boiler may be increased by' ice adding additional heat producing elements for supplying heat to the entire lower surface of the boiler.

A still further object of the invention is to provide a heating boiler in which heat of a burner or the like is applied to a relatively small quantity of Water in which the boiler is of a simple and economical construction.

With these and other objects and advantages in view the invention embodies a boiler having an open cavity in the lower part of the central portion, a heating or center tube extended from the upper part of the boiler downwardly in the cavity, a burner positioned below the lower end of the heating or center tube, a coil for return water extended around the center tube, a hot water supply connection extended downwardly into the upper end of said center tube, and a coil for domestic hot water positioned in the boiler and having independent supply and return connections.

Other features and advantages of the invention will appear from the following description taken in connection with the drawing which shows a vertical section through a boiler with parts broken away and parts shown in elevation.

Referring now to the drawing wherein like reference characters denote corresponding parts the improved heat ing and hot water boiler of this invention includes a center tube 10 positioned in a cavity 11 in a boiler housing having an outer cylindrical wall 12, an upper plate or top 13, an annular ring forming a base 14, an intermediate cylindrical wall 15 surrounding the cavity 11, an upper annular ring 16 providing the upper end of the cavity, a heating coil 17 positioned in the cavity and extended around the center tube 10, a hot water coil 18 extended through and not connected to the boiler, and a burner 19 positioned below a disc 5 providing the lower end of the center tube 10.

A hot water supply tube or pipe 20 through which water is supplied to radiators, or other heat exchanging elements or devices extends downwardly through the upper portion of the boiler housing being positioned in an opening 21 in the top or upper plate 13 and extended downwardly to a point 22 in the upper portion of the center tube 10. With the supply tube 20 positioned as illustrated in the drawing, hot water from the center tube 10 passing upwardly through the central portion thereof circulates upwardly through the pipe or tube 20 with cool water of the body of the boiler passing downwardly around the inner surface of the center tube as indicated by the arrows 23 and as this water is heated by the burner at the lower end of the center tube, the hot water passes upwardly through the center and outwardly through the pipe or tube 20.

Return water from the radiators or other heat exchanging elements or devices is returned to the boiler through a pipe 24 which passes downwardly through the housing and which discharges into the lower end of the boiler housing, or is connected to the lower end 25 of the inner coil 17. The water passes upwardly through the coil 17 to the upper end of the boiler, and with the upper end of the coil connected to a tube 26, which extends downwardly to a point 27, the return water is discharged into the housing of the boiler at a point spaced from the lower end thereof. The tube 26 may, however, be omitted and the water discharged directly into the upper part of the boiler.

The upper end of the housing is provided with an annular gas jacket 28 and a similar gas jacket 29 is positioned around the lower end of the housing.

The return tube or pipe 24 may be provided with a valve 30 to facilitate installation and repair of the boiler and similar valves 31 and 32 may be provided in the supply and return connections of the hot water coil 18.;

tional ,pilqt light 52 is supplied with fuel thliop gh a tube. 34'aiidwliich 'fiielis contr 'Th if 35 is-actua'tedby athe opne e'dto the e with wires m 'a b 1 xe d d' fit e t i ltetth b ite ititg andintojthe waterofthe boiler. :Th 7 1e; niayeno be provided with an auxiliary v i whichiis supplied with fuehthroiigh were: 1 and the fueloftheburrier 41; it edrin le ty a valve Z tliatis actuated fby atliermo'stat 43, which is coneetea to'the'valve 42 with'wires' 44, ai id its an which ej'prievi eawith' an. element 416' that extends" into he wa gid m l h, fe*b i 1i' 9- suS en d r m t e IOWFI d f center tube 10 hangers 415m "the boiler hens n is upppifted by an annular ski'rtfls depending from the lower "edge" or the wall 12" and in which openings 49 greprovided- I [center tube 10- is also provided with a drain plug ill.

ef'nie b ner housing.

- fill anda similar plug'5l'is providedin the lowerend gr d withthe burner 19. only operating, water in the lower Q endbithefceriterftube 10, beifigsn eeteanne uy to burner, is'heated to 'a comparatively/"high temperat 'ur 'e with the, result'thatthe hot water passes upwardly through the centerjo'f' the tube 10, drawing water to ifc'plije the hot. water downwardly around the outside or {surface of'the tube 10 as indicated'by the arrows Z3 whereby the water having the" highest temperature 13 es upwardly through the supply pipe 20 to rz uliators, exchanges or' other devices and "the return water 'es"d'ownwardl'y' throughthe' pipe 24 into the lower en of the 'coil 17, upwardly through the coil and down: wardl'y through the pipe 26 to the lower Portion of the boiler orhousing. I V v the relatively small body of water heated to a comparatively high temperaturejrapid eiieulation is obtained and, radiators or other heat, exchanging devices iii'emaintained at the highest po'ssibletemperature without pumps or' other'circulating devices. I l i l i I I The domestic hot "water'coil '18 is independently connected and {is positioned in the water of the boiler, and itwill also be understood that'thiscoil maybe positioned jnflie cavity with thec'oi117.

"It has been found that s'uflicient heat is provided with thesmall burner 19, however; the ailxiliafy burner isprovided for extremeteniperatures or for rapid heating in'a cold building. I i The gases of Combustion from the burners pass upwardly through the cavity ll'and are discharged to "a stack through the flue connection 53. i i

' It will be understood that'modifications, within the scope of the appended claim," may be made .in th'e design andiarr'angement of the without departing from the spirit ofthe invention', 5 What is claimedisz In a heating and hot water boiler, the combination *,which comprises a vertically disposed cylindrical 'out er wall, a horizontally positioned cover" plate positioned on theupper'end'of the outer wall and having a peripheral flange extended from said wall,'the cover plate 'being integrally connected to thewall providing a closure'for the npperend of the boiler, a base plate"having a cylindrical opening in the central portion spaced from the lower end'of the cylindrical wall of the boilera'nd in:

4 tegrally connected to said wall, an intermediate vertically disposed cylindrical Wall extended upwardly from theinnef'edge of 'tlrebase plate'andintegrallyconnected to said base plate, a horizontally disposed disc spaced downwardly from the upper end of the outer cylindrical wall of the boiler and extended inwardly from the upper edge of the intermediate cylindrical wall, the disc having a cylindrical opening the central part thereof, a center tube positioned in the'intermediate cylindrical wall, the upper end of the center tube being integrally connected to the disc resting upon the npperend of the intermediate cylindrical'will and'the lower end of the center tube being closed, a burner spaced from and positioned below" the lower edge "of the"'cefiter tube',"a disc "With"th'e parts assembled as illustrated and described positioned in thelowei end'of the center tube, integrally connected to the tube and providing a closure at the lower end of said center tube, the closure at the lower end of the center tube being spaced upwardly from the base plate and positioned directly above the burner, a hot water supply tiib'e' 'ii't'en'd'ed through the horizontally disposed tatebh the upperenh of'the'outer' cylindrical wall and attended do rlwrdlythgou'gh the opening'iil the central port ion of the hon ontauyuisposed disc on the upper'endbf'the' intermediate cylindrical wall; the lower 'e'nd of thesupply' tubef'beih'g spaceddownwardly' a relatively short'distance'fiom -t eupper end of the center tube whereby hoflwatef' in the upper "portion of'the cementum 'pa'ss'e's fip Idly through the supply tube, the area around said "cjent'eijtub' providing "a combusnon chamber, a tuhulafcofl extended aijound thec'eutet tube and positionedin' the combustion chamljer; one'end of the tubular coil being eiteu' 4 for -COIJ'JieCtiOn tq'a hot water return line and the osit'e end o ening into hot water are between the" intermediate" cylindrical wall and't'h'e outer cylindrical'walh' a domestic hot water coil positioned in 'said arlea' Betw en the intermediate cylindrical wall 'andbuter cylindrical 'wall'fthe upper endof saidcoil extending thi oiigli the horizontally dispag d plate qntne up er edge or the outer cylindrical wall" for connecting the coil to a hot" water supply'sy stem and the lower end of the domestic hot Water coil being extended" through the lowefpoftion of the outer e lindnc t'wau "ror'connection" to water sup l a "connection extended from the"area between the ce nter tube -a nd intermediate cylindrical wall through theoutercylindrical'wall for eonnee to a stack, an auxiliary bm-fier' Essinoned below area between the center tube and intermediate cyl drica'l wall, a supply tube extendedfroin said'auiiiliaryburner, avalve in said 'supplytube, a thermostat'positionedin the up r end cr me outer cylindrical' iwall-for "regulating the valve in the supply tube ofthe auxiliary urner, a connection extended from the burner at the lower end of the center meets "a 'fuel' supply, a valve'in saidconnection from the fuel supply of the burner below the lower endiof the center 'tubefand a thermostat arse positioned in the upper end" of the e ter cylindrical and'operatively connected to the valve the 'fuel supply connectipn were "burner positioned below the ce rit ei" tube for con' trolling'the flow'of fuel't'o saia'burn y.

efugees fit ed n the fi e o his pa n STA ES PATENTS 

